Gurobi 5.0.1 (linux64) logging started Wed Apr 24 07:17:30 2013 Optimize a model with 89394 rows, 88454 columns and 353534 nonzeros Presolve removed 6571 rows and 0 columns Presolve time: 0.63s Presolved: 82823 rows, 88454 columns, 340392 nonzeros Variable types: 88360 continuous, 94 integer (94 binary) Root relaxation: objective 1.151549e+05, 18176 iterations, 4.96 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 115154.865 0 4 - 115154.865 - - 5s H 0 0 118466.00000 115154.865 2.80% - 6s H 0 0 115604.00000 115154.865 0.39% - 6s 0 0 115162.446 0 6 115604.000 115162.446 0.38% - 7s 0 0 115162.712 0 6 115604.000 115162.712 0.38% - 7s 0 0 115168.633 0 5 115604.000 115168.633 0.38% - 9s 0 0 115168.633 0 4 115604.000 115168.633 0.38% - 16s 0 0 115169.826 0 6 115604.000 115169.826 0.38% - 17s 0 0 115170.274 0 6 115604.000 115170.274 0.38% - 17s 0 2 115171.512 0 6 115604.000 115171.512 0.37% - 22s H 16 2 115429.00000 115328.000 0.09% 189 25s * 17 1 6 115354.00000 115354.000 0.0% 198 25s Cutting planes: Gomory: 3 Flow cover: 6 Explored 18 nodes (29657 simplex iterations) in 25.19 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.153540000000e+05, best bound 1.153540000000e+05, gap 0.0%